基于“岩石物理相-流动单元”测井响应定量评价特低渗透油藏优质储层——以延长油田东部油区长6油层组为例

发布时间：2018-07-31 19:23

【摘要】：岩石物理相和流动单元均可从不同角度表征储层的非均质性,鄂尔多斯盆地东部地区特低渗透储层非均质性极强,单独利用岩石物理相或流动单元对该地区进行储层评价会存在一定偏差。通过定性识别和定量划分,建立了"岩石物理相-流动单元"定量综合评价指标体系,并提出利用这一体系来定量评价优质储层。研究结果表明:一类、二类"岩石物理相-流动单元"具有较好的储集性能和渗流结构,由其圈定的近期可开发或评价后可开发的优质储层共49个,从而确定了含油甜点区的分布规律和延展方向。这一研究成果能兼顾岩石物理相对于油气富集的控制作用和流动单元的流动特性,可有效减小单独利用岩石物理相或流动单元筛选优质储层所造成的误差,现场应用效果较好,为研究区增储上产提供了有利井位和区域。
[Abstract]:The petrophysical facies and flow units can characterize the heterogeneity of reservoir from different angles. The heterogeneity of ultra-low permeability reservoir is very strong in the eastern part of Ordos Basin. There is a certain deviation in evaluating the reservoir in this area by using the rock physical facies or flow unit alone. Through qualitative identification and quantitative division, a quantitative comprehensive evaluation index system of "petrophysical facies-flow unit" is established, and it is proposed to use this system to quantitatively evaluate high quality reservoirs. The results show that the second kind of "petrophysical phase-flow unit" has good reservoir performance and percolation structure. There are 49 high quality reservoirs which can be developed or evaluated by them in the near future. The distribution law and extension direction of oily dessert area were determined. This research result can take into account the controlling effect of rock physics relative to oil and gas enrichment and the flow characteristics of flow unit, and can effectively reduce the error caused by using rock physical facies or flow unit alone to screen high quality reservoir, and the field application effect is better. It provides favorable well location and area for increasing reservoir and production in the study area.
【作者单位】：中国地质大学(北京)能源学院;中国地质大学(北京)非常规天然气能源地质评价与开发工程北京市重点实验室;中国石油大学(华东)石油工程学院;中国石油长庆油田分公司第八采油厂;
【基金】：国家重大科技专项“中西部地区碎屑岩储层预测、保护与改造技术”(编号:2011ZX05002-005)资助
【分类号】：P618.13;P631.81

【参考文献】